Everything in Linux is case sensitive.  When you type in commands, pay attention to upper case and lower case letters.
Filesystems aren’t assigned letters like Windows.  there is a single root filesystem whose path is “/”.  it’s at the top of the filesystem.
With Linux, the root filesystem "/" which holds the operating system and apps; /home, which is the directory where user home directories are located; and a partition  for swap – Linux' virtual memory system.You can keep the home directories in a separate partition if you would like.
For the swap partition, the traditional sizing recommendation is twice physical memory. You probably don't want to go over 2 gig of swap.

                                                        /
/bin  /boot  /dev/ /etc /home /lib /sbin /root /opt /proc /mnt /tmp /usr/var/srv